I want to backup my emails on my computer, is it better to backup the profiles folder or to select all emails and save as .eml in a folder? Is there a way to see saved .eml files back into Thunderbird as a nice list with titles, sender, timestamps, etc. instead of just being able to open an email individually with Windows Explorer without re-importing them to my email provider using their storage space? Is there a way in IMAP to keep every emails regardless of if I've deleted the emails in the web interface of my email provider?